Stool



FIG. 1 is a top, front, right side perspective view of a stool showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The dash-dash broken lines of the figures represent unclaimed portions of the stool and form no part of the claimed design. The dash-dot broken lines in the figures define boundaries of the claimed design, and form no part of the claimed design. 

CLAIM The ornamental design for a stool, as shown and described. 